Contrary to legacy board nRF6310, nRF51-DK does not have any on-board devices that could be controlled by TWI so there is no way to show TWI performance using only DK. However, we are considering adding support to selected shields in the future.
Would like an example as well since it's a bit more complicated than in the previous SDKs in my opinion. For examples the new structs etc. I like the more sophisticated implementation though and I hope I can get it working.
